WO2022196148A1 - 磁石配列方法、ロータの製造方法、磁石配列治具及び磁石誘導装置 - Google Patents
磁石配列方法、ロータの製造方法、磁石配列治具及び磁石誘導装置 Download PDFInfo
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- WO2022196148A1 WO2022196148A1 PCT/JP2022/003940 JP2022003940W WO2022196148A1 WO 2022196148 A1 WO2022196148 A1 WO 2022196148A1 JP 2022003940 W JP2022003940 W JP 2022003940W WO 2022196148 A1 WO2022196148 A1 WO 2022196148A1
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 230000004907 flux Effects 0.000 claims abstract description 55
- 238000003780 insertion Methods 0.000 claims description 26
- 230000037431 insertion Effects 0.000 claims description 26
- 230000006698 induction Effects 0.000 claims description 23
- 239000000696 magnetic material Substances 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 10
- 238000005192 partition Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0247—Orientating, locating, transporting arrangements
Definitions
- the present disclosure relates to a magnet arranging method, a rotor manufacturing method, a magnet arranging jig, and a magnet guidance device.
- the magnets When the magnets are magnetized after they are arranged in the rotor core, etc., the magnets may not be magnetized with high precision. It is fixed to the rotor core, etc.
- a magnet unit in which a plurality of magnetized magnets are fixed to a plate made of a thin strip of iron with epoxy resin is wound around a rotor core.
- the main magnetic pole permanent magnet and the sub magnetic pole permanent magnet are fixed to the back yoke using the unevenness of the back yoke.
- the present disclosure has been made in view of such problems, and provides a magnet arranging method, a rotor manufacturing method, a magnet arranging jig and a Realize a magnetic induction device.
- a magnet arrangement method is a method for arranging a plurality of magnetized magnets, An arranging step of arranging the plurality of magnetized magnets on a magnet arranging jig made of a magnetic material, In the arranging step, a magnetic flux loop of the newly arranged magnetized magnet is already attached to the magnet arranging jig while the newly arranged magnetized magnet is brought into contact with and attracted to the magnet arranging jig. The newly arranged magnetized magnet is moved in the axial direction of the magnetic flux loop of the newly arranged magnetized magnet so as to overlap the magnetic flux loop of the already arranged magnetized magnet. Adjacent to a magnet.
- the magnet arranging jig is formed with a groove, It is preferable to arrange the magnetized magnets to be newly arranged such that the grooves are arranged at the boundaries between adjacent magnetized magnets when the magnetized magnets are arranged.
- a rotor manufacturing method includes the magnet arrangement method described above.
- a magnet arranging jig is a magnet arranging jig used for arranging magnetized magnets, Equipped with a first jig made of a magnetic material, The magnetized magnets are arranged on the surface of the first jig, and grooves are arranged at boundaries between adjacent magnetized magnets when the magnetized magnets are arranged, An inserting portion for inserting the magnetized magnets to arrange the magnetized magnets on the surface of the first jig is provided on one end side of the magnet arranging jig in the direction in which the groove portion extends.
- the magnet arrangement jig described above includes a second jig made of a magnetic material,
- the second jig is arranged on the other end side of the first jig in the direction in which the groove extends,
- the second jig protrudes from the surface of the first jig on which the groove is formed so that the end of the magnetized magnet on the insertion direction side comes into contact with the magnetized magnet.
- a magnet guidance device is a device for guiding a magnetized magnet, a guide portion for guiding the magnetized magnet; an induction magnet that guides the magnetized magnet by magnetic force; a pushing portion for pushing the magnetized magnet in the axial direction of the magnetic flux loop of the magnetized magnet so that the magnetic flux loop of the magnetized magnet overlaps the magnetic flux loop of the induction magnet; Prepare.
- the induction magnets are arranged on both sides of the guide portion when viewed in the direction in which the magnetized magnets are pushed.
- a magnet arranging method it is possible to realize a magnet arranging method, a rotor manufacturing method, a magnet arranging jig, and a magnet guidance device capable of arranging magnetized magnets at precisely determined positions.
- FIG. 4 is a perspective view showing how newly arranged magnetized magnets are arranged on a magnet arrangement jig in the magnet arrangement method of Embodiment 1;
- FIG. 10 is a diagram of a state in which magnetized magnets newly arranged in a magnet arrangement jig are arranged in the magnet arrangement method of the first embodiment, as viewed from the Z-axis + side;
- FIG. 4 is an XY cross-sectional view showing a force relationship when magnetizing jigs are arranged in a magnet arranging jig;
- FIG. 10 is a diagram showing magnetic flux loops between magnetized magnets when a newly arranged magnetized magnet is brought closer to an already arranged magnetized magnet toward the + side of the X axis;
- FIG. 10 is a diagram showing how magnetized magnets are arranged using the magnet arrangement device of Embodiment 2;
- FIG. 10 is a perspective view showing how magnetized magnets are arranged, viewed from the + side of the Z axis;
- FIG. 10 is a diagram of a state in which a magnetized magnet is brought into contact with a magnet arranging jig, viewed from the Y-axis ⁇ side;
- FIG. 10 is a view of a state in which magnetized magnets are arranged, viewed from the Y-axis ⁇ side;
- FIG. 11 is a perspective view showing a magnet guidance device according to Embodiment 3;
- FIG. 11 is a perspective view showing how a magnetized magnet is inserted into an insertion portion of a rotor core using the magnet guidance device of Embodiment 3;
- FIG. 11 is a perspective view showing a state in which a magnetized magnet is inserted into an insertion portion of a rotor core using the magnet guidance device of Embodiment 3;
- FIG. 1 is a perspective view showing how newly arranged magnetized magnets are arranged on a magnet arrangement jig in the magnet arrangement method of the present embodiment.
- FIG. 2 is a diagram of a state in which magnetized magnets newly arranged in a magnet arrangement jig are arranged in the magnet arrangement method of the present embodiment, viewed from the Z-axis + side.
- FIG. 3 is an XY sectional view showing the force relationship when the magnetizing jig is arranged in the magnet arranging jig.
- the magnetized magnet 1 has, for example, a square prism shape elongated in the Z-axis direction, as shown in FIGS. and an S pole portion are arranged.
- the shape of the magnetized magnet 1 is not limited to a square pole shape, and may be a cylindrical shape or other polygonal shape. Incidentally, in FIG. 1 and the like, a part of the magnetic flux loop R is simply shown.
- the magnet arrangement jig 2 is made of a magnetic material, and includes a first jig 21 and a second jig 22, as shown in FIGS. 1 to 3, for example.
- the first jig 21 has, for example, a basic form of a flat plate substantially parallel to the YZ plane.
- the X-axis-side surface of the first jig 21 is an arrangement surface on which the magnetized magnets 1 are arranged, and is a guide surface for guiding the magnetized magnets 1 when the magnetized magnets 1 are arranged. function as
- a groove portion 21a extending in the Z-axis direction is formed on the surface of the first jig 21 on the X-axis-side. As shown in FIG. 2, the groove 21a is arranged at the boundary between adjacent magnetized magnets 1 when the magnetized magnets 1 are arranged on the X-axis-side surface of the first jig 21. , are spaced apart in the Y-axis direction. Therefore, the width dimension in the Y-axis direction between the adjacent grooves 21a on the X-axis-side surface of the first jig 21 is smaller than the width dimension in the Y-axis direction of the magnetized magnet 1 .
- the groove 21a can reduce the magnetic flux generated between the adjacent magnetized magnets 1, and the X-axis of the first jig 21 in the magnetized magnet 1
- the depth in the X-axis direction and the width in the Y-axis direction are preferably such that the attracting force A to the side surface is greater than the repulsive force Re (or attracting force) between the adjacent magnetized magnets 1 .
- the length of the groove portion 21a in the Z-axis direction is preferably longer than the length of the magnetized magnet 1 in the Z-axis direction.
- the second jig 22 is a flat plate substantially parallel to the XY plane and arranged on the Z-axis side of the first jig 21 .
- the second jig 22 protrudes from the end of the first jig 21 on the Z-axis side toward the X-axis side.
- the Z-axis positive side surface of the second jig 22 is a regulating surface that determines the position of the Z-axis negative side of the magnetized magnet 1 in contact with the Z-axis negative side end of the arranged magnetized magnet 1. function as
- FIG. 4 is a diagram showing magnetic flux loops between magnetized magnets when a newly arranged magnetized magnet is brought closer to the already arranged magnetized magnet toward the + side of the X axis.
- FIG. 4 also shows a part of the magnetic flux loop R in a simplified manner.
- the magnetized magnets that have already been arranged may be denoted by reference numeral 1a, and the newly arranged magnetized magnets may be denoted by reference numeral 1b.
- the magnetic flux loops of the magnetized magnets 1a already arranged are denoted by Ra
- the magnetic flux loops of the newly arranged magnetized magnets 1b are denoted by Rb.
- the newly arranged magnetized magnets 1b are already arranged toward the X-axis + side.
- the magnetic flux loops Ra of the magnetized magnets 1a and the magnetic flux loops Rb of the magnetized magnets 1b repel each other, and the newly arranged magnetized magnets 1b move toward the already arranged magnetized magnets. It is difficult to arrange them so as to be adjacent to the magnet 1a in the Y-axis direction.
- the newly arranged magnetized magnet 1b is arranged so that the magnetic flux loop Rb of the newly arranged magnetized magnet 1b overlaps the magnetic flux loop Ra of the already arranged magnetized magnet 1a.
- the magnetic flux loop Rb of the magnetized magnet 1b is brought closer to the already arranged magnetized magnet 1a toward the Z-axis ⁇ side, which is the axial direction, the magnetic flux loop Rb of the magnetized magnet 1b is newly arranged with the magnetic flux loop Ra of the already arranged magnetized magnet 1a.
- the newly arranged magnetized magnet 1b Due to the magnetic flux loop Rb of the magnetized magnet 1b, the newly arranged magnetized magnet 1b is drawn in to the Z-axis - side, and the newly arranged magnetized magnet 1b is connected to the already arranged magnetized magnet 1a. They can be arranged to be axially adjacent.
- the newly arranged magnetized magnet 1b is magnetized so that the magnetic flux loop Rb of the newly arranged magnetized magnet 1b overlaps the magnetic flux loop Ra of the already arranged magnetized magnet 1a. It approaches the already arranged magnetized magnet 1a toward the Z-axis - side, which is the axial direction of the magnetic flux loop Rb of the magnetic magnet 1b.
- the space at the end of the magnet arrangement jig 2 on the Z-axis + side and on the X-axis ⁇ side with respect to the first jig 21 is newly arranged. function as an insertion portion 2a for inserting the magnetized magnet 1b.
- the insertion portion 2a is indicated by a one-dot chain line (virtual line).
- the magnetic flux loop Ra of the magnetized magnet 1a already arranged and the magnetic flux loop Rb of the newly arranged magnetized magnet 1b draw the magnetized magnet 1b toward the negative side of the Z axis, and the magnetized magnet 1b is newly arranged. It is possible to arrange the magnetized magnet 1b adjacent to the already arranged magnetized magnet 1a in the Y-axis direction.
- the magnetic flux loop Ra of the magnetized magnets 1a already arranged and the magnetic flux loop Rb of the newly arranged magnetized magnets 1b allow the newly arranged magnetized magnets 1b to be replaced by the already arranged magnetized magnets 1a. can be retracted to the Z-axis-side so that it is adjacent to the
- the groove portion 21a does not correspond to the X-axis of the first jig 21 in the magnetized magnet 1. It is formed so that the attractive force A to the negative side surface is greater than the repulsive force Re (or attractive force) between adjacent magnetized magnets 1 . Therefore, when the magnetized magnets 1b to be newly arranged are brought into contact with the first jig 21 and attracted to each other, the attracting force overcomes the repulsive force or the attracting force between the adjacent magnetized magnets 1, and the magnetized magnets 1b are newly arranged. The magnetized magnet 1b can be moved to the Z-axis minus side with high accuracy.
- the magnetized magnet 1 can be moved by using the X-axis minus side surface of the first jig 21 as a guide surface. As a result, the magnetized magnets 1b to be newly arranged can be accurately arranged at predetermined positions.
- the grooves 21a adjacent to the already arranged magnetized magnets 1a in the Y-axis direction are observed.
- the newly arranged magnetized magnet 1b is brought into contact with and attracted to the surface of the first jig 21 on the X-axis - side, and in this state, the newly arranged magnetized magnet 1b is moved to the Z-axis - It is preferable to bring the end of the magnetized magnet 1b on the Z-axis minus side into contact with the second jig 22 by moving it to the side.
- the magnetized magnets 1 can be arranged using the grooves 21a as marks. Moreover, the groove portion 21a can reduce the magnetic flux generated between the adjacent magnetized magnets 1 . Further, the position of the end of the magnetized magnet 1 on the Z-axis ⁇ side can be determined with high accuracy by allowing the Z-axis + side surface of the second jig 22 to function as a defining surface. As a result, the magnetized magnets 1b to be newly arranged can be accurately arranged at predetermined positions.
- the magnet arrangement jig 2 of the present embodiment includes the second jig 22, it may be omitted.
- the first jig 21 is not limited to a flat plate, and may be cylindrical or the like.
- the groove portion 21a of the magnet arrangement jig 2 may be omitted.
- the grooves 21a of the magnet arranging jig 2 are formed in the magnet arranging jig 2 so as to be arranged not only at all the boundary portions of the adjacent magnetized magnets 1 but also at some of the boundary portions. may be
- the magnet arranging method of the present embodiment is suitable, for example, when arranging the magnetized magnets 1 in Halbach arrangement. can do.
- a rotor manufacturing method using the principle of the magnet arrangement method described above will be described.
- the rotor manufacturing method of the present embodiment is suitable for manufacturing a radial gap rotor.
- FIG. 5 is a diagram showing how magnetized magnets are arranged using the magnet arrangement device of the present embodiment.
- FIG. 6 is a perspective view showing how the magnetized magnets are arranged, viewed from the + side of the Z axis.
- FIG. 7 is a view of the state in which the magnetized magnets are brought into contact with the magnet arrangement jig, viewed from the Y-axis ⁇ side.
- FIG. 8 is a view of the arrangement of magnetized magnets viewed from the Y-axis side. Incidentally, in FIGS. 6 to 8, some magnetized magnets are extracted and shown so that newly arranged magnetized magnets are clearly shown.
- the magnet arranging device 3 includes a magnet arranging jig 4, a partition plate 5 and a magnet inserting device 6, as shown in FIGS.
- the magnet arrangement jig 4 is made of a magnetic material, and includes a first jig 41 and a second jig 42 as shown in FIG. 6 and the like.
- the first jig 41 has a cylindrical shape as a basic form, and the central axis of the first jig 41 is arranged substantially parallel to the Z axis.
- the outer peripheral surface of the first jig 41 serves as an arrangement surface for the magnetized magnets 1 and functions as a guide surface for guiding the magnetized magnets 1 when the magnetized magnets 1 are arranged.
- a groove portion 41 a extending in the Z-axis direction is formed on the outer peripheral surface of the first jig 41 .
- the groove portion 41a extends in the circumferential direction of the first jig 41 so that when the magnetized magnets 1 are arranged on the outer peripheral surface of the first jig 41, the groove portion 41a is arranged at the boundary portion between adjacent magnetized magnets 1. They are spaced apart. Therefore, the width dimension between adjacent grooves 41 a on the outer peripheral surface of the first jig 41 is shorter than the width dimension of the magnetized magnet 1 .
- the grooves 41a may be formed in the first jig 41 so as to be arranged not only at all boundary portions of the adjacent magnetized magnets 1 but also at some boundary portions.
- the groove portion 41a can reduce the magnetic flux generated between the adjacent magnetized magnets 1, and the attraction force of the magnetized magnets 1 to the outer peripheral surface of the first jig 41 is the adjacent attachment force. It is preferable that the depth in the radial direction and the width in the circumferential direction of the first jig 41 become large with respect to the repulsive force or the attractive force between the magnetic magnets 1 .
- the length of the groove portion 41a in the Z-axis direction is preferably longer than the length of the magnetized magnet 1 in the Z-axis direction.
- the second jig 42 has an annular shape as a basic form, and is arranged substantially parallel to the XY plane.
- the second jig 42 protrudes radially outward of the first jig 41 from the Z-axis-side end of the first jig 41 .
- the Z-axis positive side surface of the second jig 42 is a regulating surface that determines the position of the Z-axis negative side of the magnetized magnet 1 in contact with the Z-axis negative side end of the arranged magnetized magnet 1. function as
- a groove portion 42a extending in the radial direction of the second jig 42 is formed on the surface of the second jig 42 on the +Z-axis side.
- the groove portion 42a is arranged on an extension line of the groove portion 41a of the first jig 41 in the radial direction of the first jig 41 when viewed from the Z-axis direction.
- the groove portion 42a is arranged at the radially outer portion of the second jig 42, for example, as shown in FIG. That is, the portion of the groove portion 42 a radially inside the second jig 42 does not reach the groove portion 41 a of the first jig 41 .
- the circumferential width dimension of the second jig 42 in the groove portion 42a is substantially equal to the thickness of the partition plate 5 so that the partition plate 5 can be held.
- Such a magnet arrangement jig 4 is preferably rotatable around the central axis of the first jig 41 by a drive mechanism (not shown).
- the partition plate 5 is arranged between adjacent magnetized magnets 1 in order to arrange the magnetized magnets 1 in a cylindrical shape.
- the partition plate 5 is a flat plate made of a non-magnetic material, and is fixed while being inserted into the groove 42 a of the second jig 42 .
- the magnet insertion device 6 is configured to be able to move the held magnetized magnet 1 in the Z-axis direction. That is, as shown in FIG. 5, the magnet insertion device 6 includes a holding portion 61 that holds the magnetized magnet 1 and a driving mechanism 62 that moves the holding portion 61 in the Z-axis direction.
- the holding portion 61 of the magnet inserting device 6 holds the newly arranged magnetized magnet 1b, and moves the holding portion 61 toward the Z-axis - side so that the magnetized magnet 1b is brought into contact with the outer peripheral surface of the first jig 41 to be attracted.
- the adhesive 10 is applied to the side surface of the newly arranged magnetized magnets 1b opposite to the side of the already arranged magnetized magnets 1a. Therefore, the adhesive 10 is also applied to the side surface of the already arranged magnetized magnets 1a on the side where the magnetized magnets are newly arranged.
- the holding portion 61 of the magnet inserting device 6 is moved to the Z-axis - side so that the magnetic flux loop of the newly arranged magnetized magnet 1b overlaps the magnetic flux loop of the already arranged magnetized magnet 1a, As shown in FIG. 8, the newly arranged magnetized magnet 1b is moved in the axial direction of the magnetic flux loop of the magnetized magnet 1b, and the end of the newly arranged magnetized magnet 1b on the Z-axis - side is moved. is brought into contact with the Z-axis + side surface of the second jig 42 .
- the magnetic flux loops of the magnetized magnets 1a already arranged and the magnetic flux loops of the newly arranged magnetized magnets 1b cause the newly arranged magnetized magnets 1b to move along the Z axis. - Pulled to the side.
- the newly arranged magnetized magnets 1b can be arranged adjacent to the already arranged magnetized magnets 1a.
- the partition plate 5 is arranged in the radially outer portion of the first jig 41 of the magnet arranging jig 4 in the gap between the magnetized magnets 1a already arranged and the magnetized magnets 1b to be newly arranged.
- the magnetized magnets 1 can be arranged in a desired circular arc shape when viewed from the Z-axis direction.
- the thickness and shape (for example, triangular shape) of the partition plate 5 may be designed according to the radius of the magnetized magnets 1 to be arranged.
- the adhesive 10 is applied to the side surfaces of the already arranged magnetized magnets 1a, when the newly arranged magnetized magnets 1b are arranged so as to be adjacent to the already arranged magnetized magnets 1a, , the newly arranged magnetized magnet 1b can be joined to the already arranged magnetized magnet 1a.
- the magnetized magnets 1 can be arranged in a cylindrical shape. After that, the magnetized magnets 1 arranged in a cylindrical shape are moved to the Z-axis + side with respect to the magnet arrangement jig 4, taken out from the magnet arrangement jig 4, fixed to a rotor core (not shown), and the rotation axis is set. Once attached, the rotor can be configured. At this time, the rotor may be either an inner rotor or an outer rotor.
- the magnet arranging method, the rotor manufacturing method, and the magnet arranging device 3 are also similar to the first embodiment.
- the newly arranged magnetized magnet 1b can be pulled in to the Z-axis minus side so as to be adjacent to the already arranged magnetized magnet 1a.
- the groove portion 41a has an attractive force to the outer peripheral surface of the first jig 41 in the magnetized magnet 1. is formed so as to be greater than the repulsive force or attractive force between adjacent magnetized magnets 1 . Therefore, when the magnetized magnets 1b to be newly arranged are brought into contact with the first jig 41 and attracted to each other, the attracting force overcomes the repulsive force or the attracting force between the adjacent magnetized magnets 1, and the magnetized magnets 1b are newly arranged. The magnetized magnet 1b can be moved to the Z-axis minus side with high accuracy.
- the newly arranged magnetized magnet 1b can be moved by using the outer peripheral surface of the first jig 41 as a guide surface. As a result, the magnetized magnets 1b to be newly arranged can be accurately arranged at predetermined positions.
- the magnet arranging jig 4 rotates around the central axis of the first jig 41 . It may be configured to rotate around an axis. In short, it is sufficient that at least one of them rotates around the central axis of the first jig 41 .
- FIG. 9 is a perspective view showing the magnet guidance device of this embodiment.
- the magnet guidance device 7 includes runners 71, guide portions 72, guide magnets 73, and pushing portions 74, as shown in FIG.
- the runner 71 is made of a non-magnetic material and has an insertion portion 71a and rails 71b.
- the insertion portion 71a has a cylindrical shape with a through portion 71c passing through the insertion portion 71a in the Z-axis direction.
- the rails 71b extend in the Z-axis direction and are spaced apart in the X-axis direction.
- the negative end of the rail 71b on the Z-axis is fixed to a fixing portion 71d projecting from the insertion portion 71a toward the positive side of the X-axis.
- the guide portion 72 is a magnetic body extending in the Z-axis direction, and is fixed to the X-axis + side portion of the through portion 71c of the insertion portion 71a. At this time, the surface of the guide portion 72 on the +X-axis side is preferably arranged substantially parallel to the YZ plane.
- the induction magnets 73 are, for example, in the shape of a substantially quadrangular prism that is long in the Z-axis direction, and are arranged on both sides of the guide portion 72 in the Y-axis direction when viewed from the Z-axis direction. In other words, the induction magnets 73 are arranged on both sides of the guide portion 72 so as to sandwich the guide portion 72 when viewed in the X-axis direction.
- the induction magnet 73 is fixed to the Y-axis + side portion and the Y-axis - side portion of the through portion 71c of the insertion portion 71a.
- the axes of the magnetic flux loops of these induction magnets 73 are substantially parallel to the Z-axis.
- the shape of the induction magnet 73 is not limited to a square pole shape, and may be a cylindrical shape or other polygonal shape, and the shape of the induction magnet 73 is not limited.
- the pushing portion 74 includes a slider 74a and a holding portion 74b.
- a rail 71b is inserted through the slider 74a in the Z-axis direction, and the slider 74a is movable along the rail 71b.
- the holding portion 74b protrudes from the X-axis-side end of the slider 74a to the Z-axis-side, and has a mechanism capable of holding the magnetized magnet 1 at the Z-axis-side end of the holding portion 74b. .
- FIG. 10 is a perspective view showing how a magnetized magnet is inserted into the insertion portion of the rotor core using the magnet guidance device of the present embodiment.
- FIG. 11 is a perspective view showing a state in which a magnetized magnet is inserted into the insertion portion of the rotor core using the magnet guidance device of the present embodiment.
- the insertion portion 8a formed in the rotor core 8 is arranged so as to overlap the insertion portion 71a of the runner 71 in the Z-axis direction. Then, as shown in FIG. 10, the magnetized magnet 1 is held by the holding portion 74b of the pushing portion 74. As shown in FIG.
- the push-in portion 74 is moved along the rail 71b to the Z-axis - side, and the magnetized magnet 1 is inserted into the insertion portion 71a.
- the magnetized magnet 1 is inserted into the inserting portion 71a so that the surface of the magnetized magnet 1 on the negative side of the X axis is substantially in surface contact with the surface of the guide portion 72 on the positive side of the X axis.
- the magnetized magnet 1 is pushed into the insertion portion 8a of the rotor core 8 by the pushing portion 74. After that, the magnetized magnet 1 is released from the holding portion 74 b of the pushing portion 74 .
- the magnetized magnet 1 is pushed in the axial direction of the magnetic flux loop of the magnetized magnet 1 so that the magnetic flux loop of the magnetized magnet 1 and the magnetic flux loop of the induction magnet 73 overlap each other.
- the magnetic flux loop of the magnetized magnet 1 and the magnetic flux loop of the induction magnet 73 pull the magnetized magnet 1 toward the Z-axis ⁇ side and guide it to the insertion portion 8 a of the rotor core 8 . That is, the induction magnet 73 induces the magnetized magnet 1 by the magnetic force of the induction magnet 73 .
- the magnet guidance device 7 of the present embodiment uses the principle of the first embodiment, and the magnetic flux loop of the magnetized magnet 1 and the magnetic flux loop of the induction magnet 73 cause the magnetized magnet 1 to move toward the Z-axis negative side. can be induced to Moreover, the magnetized magnet 1 can be moved by allowing the X-axis negative side surface of the guide portion 72 to function as a guide surface. As a result, the magnetized magnet 1 can be easily guided to a predetermined position with high accuracy.
- the induction magnets 73 are arranged on both sides of the guide portion 72 in the Y-axis direction when viewed from the Z-axis direction, but at least one induction magnet 73 may be provided. However, when the induction magnets 73 are arranged on both sides of the guide portion 72, the position control of the magnetized magnet 1 in the Y-axis direction can be stabilized.
- the magnetized magnet 1 is inserted as an embedded magnet into the insertion portion 8a of the rotor core 8.
- the magnetized magnet 1 is inserted on the inner or outer peripheral surface of the rotor core using the magnet guidance device 7. can be similarly implemented when arranging.
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Abstract
Description
磁性体から成る磁石配列治具に前記複数の着磁磁石を配列する配列工程を備え、
前記配列工程では、新たに配列される着磁磁石を前記磁石配列治具に接触させて吸着させた状態で、前記新たに配列される着磁磁石の磁束ループが、前記磁石配列治具に既に配列された着磁磁石の磁束ループに重なるように、前記新たに配列される着磁磁石の磁束ループの軸心方向に当該新たに配列される着磁磁石を移動させて前記既に配置された着磁磁石に隣接させる。
前記着磁磁石が配列された際に隣接する着磁磁石の境界部分に前記溝部が配置されるように、前記新たに配列される着磁磁石を配列することが好ましい。
磁性体から成る第1の治具を備え、
前記第1の治具の表面には、前記着磁磁石が配列され、前記着磁磁石が配列された場合に隣接する着磁磁石の境界部分に配置される溝部を有し、
前記磁石配列治具における前記溝部が延在する方向の一方の端部の側には、前記着磁磁石を前記第1の治具の表面に配列するために当該着磁磁石を挿入する挿入部を有する。
前記第2の治具は、前記第1の治具に対して当該第1の治具における前記溝部が延在する方向の他方の端部の側に配置され、
前記第2の治具は、前記着磁磁石における挿入方向の側の端部が接触するように、前記第1の治具における前記溝部が形成された側の表面から突出することが好ましい。
前記着磁磁石を案内する案内部と、
前記着磁磁石を磁力によって誘導する誘導磁石と、
前記着磁磁石の磁束ループが、前記誘導磁石の磁束ループに重なるように、前記着磁磁石の磁束ループの軸心方向に当該着磁磁石を押し込む押し込み部と、
を備える。
先ず、本実施の形態の磁石配列方法で用いる着磁磁石及び磁石配列治具を説明する。なお、以下の説明では、説明を明確にするために、三次元(XYZ)座標系を用いて説明する。
本実施の形態では、上述の磁石配列方法の原理を利用したロータの製造方法を説明する。本実施の形態のロータの製造方法は、ラジアルギャップ型のロータを製造する際に好適である。
本実施の形態では、上述の磁石配列方法の原理を利用した磁石誘導装置を説明する。先ず、本実施の形態の磁石誘導装置の構成を説明する。本実施の形態の磁石誘導装置は、ロータコアなどの磁性体に着磁磁石を配置する際に好適である。図9は、本実施の形態の磁石誘導装置を示す斜視図である。
2 磁石配列治具、2a 挿入部
21 第1の治具、21a 溝部
22 第2の治具
3 磁石配列装置
4 磁石配列治具
41 第1の治具、41a 溝部
42 第2の治具、42a 溝部
5 仕切り板
6 磁石挿入装置、61 保持部、62 駆動機構
10 接着剤
7 磁石誘導装置
71 ランナー、71a 挿入部、71b レール、71c 貫通部、71d 固定部
72 案内部
73 誘導磁石
74 押し込み部、74a スライダ、74b 保持部
8 ロータコア、8a 挿入部
A 吸着力
R 磁束ループ、Ra 既に配列された着磁磁石の磁束ループ、Rb 新たに配列される着磁磁石の磁束ループ
Re 反発力
Claims (7)
- 複数の着磁磁石を配列する方法であって、
磁性体から成る磁石配列治具に前記複数の着磁磁石を配列する配列工程を備え、
前記配列工程では、新たに配列される着磁磁石を前記磁石配列治具に接触させて吸着させた状態で、前記新たに配列される着磁磁石の磁束ループが、前記磁石配列治具に既に配列された着磁磁石の磁束ループに重なるように、前記新たに配列される着磁磁石の磁束ループの軸心方向に当該新たに配列される着磁磁石を移動させて前記既に配置された着磁磁石に隣接させる、磁石配列方法。 - 前記磁石配列治具には、溝部が形成されており、
前記着磁磁石が配列された際に隣接する着磁磁石の境界部分に前記溝部が配置されるように、前記新たに配列される着磁磁石を配列する、請求項1に記載の磁石配列方法。 - 請求項1又は2に記載の磁石配列方法を備える、ロータの製造方法。
- 着磁磁石を配列するために用いられる磁石配列治具であって、
磁性体から成る第1の治具を備え、
前記第1の治具の表面には、前記着磁磁石が配列され、前記着磁磁石が配列された場合に隣接する着磁磁石の境界部分に配置される溝部を有し、
前記磁石配列治具における前記溝部が延在する方向の一方の端部の側には、前記着磁磁石を前記第1の治具の表面に配列するために当該着磁磁石を挿入する挿入部を有する、磁石配列治具。 - 磁性体から成る第2の治具を備え、
前記第2の治具は、前記第1の治具に対して当該第1の治具における前記溝部が延在する方向の他方の端部の側に配置され、
前記第2の治具は、前記着磁磁石における挿入方向の側の端部が接触するように、前記第1の治具における前記溝部が形成された側の表面から突出する、請求項4に記載の磁石配列治具。 - 着磁磁石を誘導するための装置であって、
前記着磁磁石を案内する案内部と、
前記着磁磁石を磁力によって誘導する誘導磁石と、
前記着磁磁石の磁束ループが、前記誘導磁石の磁束ループに重なるように、前記着磁磁石の磁束ループの軸心方向に当該着磁磁石を押し込む押し込み部と、
を備える、磁石誘導装置。 - 前記誘導磁石は、前記着磁磁石を押し込む方向に向かって見て、前記案内部の両側に配置されている、請求項6に記載の磁石誘導装置。
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JPS55111645A (en) * | 1979-02-19 | 1980-08-28 | Sony Corp | Automatic inserting device for magnet |
JPS62189953A (ja) * | 1986-02-14 | 1987-08-19 | Fanuc Ltd | デイスク状同期電動機のロ−タの製作法 |
JP2010200518A (ja) * | 2009-02-26 | 2010-09-09 | Shin-Etsu Chemical Co Ltd | 永久磁石回転機用回転盤及び永久磁石回転機の製造方法 |
JP2013066375A (ja) * | 2011-09-16 | 2013-04-11 | Alstom Hydro France | 永久磁石電気機械を組み立てるための方法 |
KR20170057011A (ko) * | 2015-11-16 | 2017-05-24 | 엘지이노텍 주식회사 | 로터 조립체 및 이를 포함하는 모터 |
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JPS55111645A (en) * | 1979-02-19 | 1980-08-28 | Sony Corp | Automatic inserting device for magnet |
JPS62189953A (ja) * | 1986-02-14 | 1987-08-19 | Fanuc Ltd | デイスク状同期電動機のロ−タの製作法 |
JP2010200518A (ja) * | 2009-02-26 | 2010-09-09 | Shin-Etsu Chemical Co Ltd | 永久磁石回転機用回転盤及び永久磁石回転機の製造方法 |
JP2013066375A (ja) * | 2011-09-16 | 2013-04-11 | Alstom Hydro France | 永久磁石電気機械を組み立てるための方法 |
KR20170057011A (ko) * | 2015-11-16 | 2017-05-24 | 엘지이노텍 주식회사 | 로터 조립체 및 이를 포함하는 모터 |
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